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In page Mao (card game):

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There are many variants of Mao in existence.[6] While beginners sometimes assume that the dealer (sometimes called the "Chairman", the "Mao" or the "Grand Master") and other experienced players are simply making up possibly inconsistent rules (as in the games Mornington Crescent or Fizbin), the rules of Mao are consistent within each game and can be followed correctly.[citation needed]